What is the meaning of caller?

noun

• A social or business visitor.
  • usage: "the room was a mess because he hadn't expected company"
  • synonyms: company
• An investor who buys a call option.
• The bettor in a card game who matches the bet and calls for a show of hands.
• A person who announces the changes of steps during a dance.
  • usage: "you need a fiddler and a caller for country dancing"
  • synonyms: caller-out
• Someone who proclaims or summons in a loud voice.
  • usage: "the callers were mothers summoning their children home for dinner"
• The person who convenes a meeting.
  • usage: "who is the caller of this meeting"
• The person initiating a telephone call.
  • usage: "there were so many callers that he finally disconnected the telephone"
  • synonyms: caller-up, phoner, telephoner

adjective

• Providing coolness.
  • usage: "a cooling breeze"; "`caller' is a Scottish term as in `a caller breeze'"
• Fresh.
  • usage: "caller fish"